Real-world associations between outcomes and biomarkers in severe asthma patients treated with biologics

John Townend, TRUNG N TRAN, Neil Martin, Andrew N Menzies-Gow, Eileen Wang, Michael E Wechsler, G Walter Canonica, Enrico Heffler, Luis Perez de Llano, Borja G. Cosio, Mark Hew, Matthew Peters, Peter Gerard Gibson, Sinthia Bosnic-Anticevitch, Liam G Heaney, David J Jackson, Paul E Pfeffer, John Busby, Sundeep Salvi, George C. ChristoffTodor A Popov, Celeste M. Porsbjerg, Carlos A. Torres-Duque, Riyad Al-Lehebi, Mona Al-Ahmad, Diahn Warng Perng, Celine Bergeron , Mohsen Sadatsafavi, Bassam Mahboub, Takashi Iwanaga, Jorge F Maspero, Piotr Kuna, Chin Kook Rhee, Desiree Larenas-Linnemann, Nikolaos G Papadopoulos, Andriana L. Papaioannou, Joao A Fonseca, Mariko Siyue Koh, Richard W Costello, David Price

Research output: Contribution to conferenceAbstractpeer-review

Abstract

Introduction
Clinical trial evidence shows that biologic efficacy for severe asthma is related to biomarkers, but the extent to which this can be used to select treatments in the real-world is unclear.
Aims and objectives
We aimed to determine if pre-biologic measurements of biomarkers were predictive of lung function and asthma control in severe asthma patients treated with anti-IL5/5R or anti-IgE biologics in realworld settings.
Methods
The International Severe Asthma Registry collects data from 23 countries. We included all patients aged ≥18 years with data on blood eosinophil count (BEC), fractional exhaled nitric oxide (FeNO) or serum immunoglobulin-E (IgE) and with pre- and post-biologic FEV1 and asthma control.
Associations between outcomes one year after biologic initiation and highest pre-biologic biomarker levels were examined using regression models, adjusting for baseline measurement of the relevant outcome.
Results
Higher baseline BEC and FeNO were associated with greater post-treatment FEV1 improvement in anti-IgE and anti-IL5/5R patients, and reduced odds of uncontrolled asthma in anti-IL5/5R patients (Figure). IgE level was not associated with either of these outcomes. A combination of BEC and FeNO
predicted follow-up FEV1 improvement more accurately than either alone (pConclusions The results support the use of BEC and FeNO to help to identify patients who will benefit most from biologics.
Original languageEnglish
Publication statusPublished - 15 Jun 2023

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